Paul,
To be honest, I'll have to investigate further. I've been using Code 3
of 9, and more recently Code128. If there are checksum values it is
something inherent in the barcodes and the scanner, and not something
I'm inserting.
The barcode strings I've been sending to the laser label printer would
be something like
*123ABC*
for Code 3 of 9. The * character is the start and end designators.
Mike
Paul Hill wrote:
On 2 October 2014 13:56, Koen Piller <[email protected]> wrote:
Hi
You could consider to include in the serial# a control bit that way your
people are free to scan or type the serial# if the number keyed in does not
pass the controlebit validation it will not be accepted.
An easy way would be: ( 1ste bit x 7) + ( 2nd bit x 7-1) etc till 7th bit
that Sum diveded by 8 the 8th bit would make the Sum to a mod(Sum,8) = 0
No typing errors anymore.
Koen here has a very good point. Are you printing bar codes *without*
a checksum?
I don't think I've ever seen a barcode without one.
Most use Modulo 7 or 11 which should be trivial to implement in Fox.
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